Apple Cider Vinegar attracts SHB and entices them to commit suicide by drowning in it.
Apple Cider Vinegar is available where I live at one supermarket - it is a "luxury" food item here, mucho expensive. Therefore, some experimenting might be in order. Perhaps the Banana Peel Concoction used as a Wax Moth Attractant works on SHB too, if suitably presented INSIDE the hive.
Recipe here > http://www.beeworks.com/informationcentre/wax_moth.html
Sean. Consider Small Cell. Here in Africa, where the "beast" is coming from, beeks do not seem to have much trouble with them at all - I have come accross only one beek who mentioned SHB and that sounded like management mistakes/weak hives.